Example usage for org.apache.http.client.cache HttpCacheUpdateCallback update

Introduction

In this page you can find the example usage for org.apache.http.client.cache HttpCacheUpdateCallback update.

Prototype

HttpCacheEntry update(HttpCacheEntry existing) throws IOException;

Source Link

Document

Returns the new cache entry that should replace an existing one.

Usage

From source file:org.eclipse.thym.core.internal.util.BundleHttpCacheStorage.java

@Override
public void updateEntry(String key, HttpCacheUpdateCallback callback)
        throws IOException, HttpCacheUpdateException {
    HttpCacheEntry existing = getEntry(key);
    HttpCacheEntry updated = callback.update(existing);
    if (updated == null) {
        removeEntry(key);/* www . j a v a  2  s .com*/
    } else {
        putEntry(key, updated);
    }
}

---

From source file:com.machinepublishers.jbrowserdriver.HttpCache.java

/**
 * {@inheritDoc}/* w  ww .j  a v a2 s  .  c o  m*/
 */
@Override
public void updateEntry(String key, HttpCacheUpdateCallback callback)
        throws IOException, HttpCacheUpdateException {
    HttpCacheEntry entry = callback.update(getEntry(key));
    putEntry(key, entry);
}

---

From source file:gr.wavesoft.webng.io.cache.DiskCacheStorage.java

public void updateEntry(String string, HttpCacheUpdateCallback hcuc)
        throws IOException, HttpCacheUpdateException {
    String key = WebNGSystem.SHA1Sum(string);
    HttpCacheEntry hce = hcuc.update(getEntry(key));
    Database.assignArgStatements(stmUpdate, new Object[] { serialize(hce) });
}

---

From source file:org.apache.http.impl.client.cache.memcached.MemcachedHttpCacheStorage.java

public void updateEntry(final String url, final HttpCacheUpdateCallback callback)
        throws HttpCacheUpdateException, IOException {
    int numRetries = 0;
    final String key = getCacheKey(url);
    if (key == null) {
        throw new HttpCacheUpdateException("couldn't generate cache key");
    }//from  w ww  .j  a  v  a 2 s .  co m
    do {
        try {
            final CASValue<Object> v = client.gets(key);
            MemcachedCacheEntry mce = (v == null) ? null : reconstituteEntry(v.getValue());
            if (mce != null && (!url.equals(mce.getStorageKey()))) {
                mce = null;
            }
            final HttpCacheEntry existingEntry = (mce == null) ? null : mce.getHttpCacheEntry();
            final HttpCacheEntry updatedEntry = callback.update(existingEntry);

            if (existingEntry == null) {
                putEntry(url, updatedEntry);
                return;

            } else {
                final byte[] updatedBytes = serializeEntry(url, updatedEntry);
                final CASResponse casResult = client.cas(key, v.getCas(), updatedBytes);
                if (casResult != CASResponse.OK) {
                    numRetries++;
                } else {
                    return;
                }
            }
        } catch (final OperationTimeoutException ex) {
            throw new MemcachedOperationTimeoutException(ex);
        }
    } while (numRetries <= maxUpdateRetries);

    throw new HttpCacheUpdateException("Failed to update");
}

---